Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 75FFP100A-50 found under Filter Respirator Air Filtering by North Safety Products L L C. The National Stock Number assigned to this part is 4240012492568, and the Federal Supply Class is 4240 Safety And Rescue Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 75FFP100A-50.